GB1121055A - Phosphor and method of preparation thereof - Google Patents

Phosphor and method of preparation thereof

Info

Publication number
GB1121055A
GB1121055A GB1278666A GB1278666A GB1121055A GB 1121055 A GB1121055 A GB 1121055A GB 1278666 A GB1278666 A GB 1278666A GB 1278666 A GB1278666 A GB 1278666A GB 1121055 A GB1121055 A GB 1121055A
Authority
GB
United Kingdom
Prior art keywords
mixture
sulphates
oxides
oxalates
phosphor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1278666A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB1121055A publication Critical patent/GB1121055A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7767Chalcogenides
    • C09K11/7769Oxides
    • C09K11/7771Oxysulfides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

A phosphor material is characterized by the empirical formula M1(2-x)M11xO2Ch where M1 is at least one of La and Lu, M11 is one of Dy, Er, Eu, Ho, Nd, Pr, Sm, Tb and Tm, O is oxygen, Ch is at least one of S, Se and Te, and x is between 0.0002 and 0.2. In preparation, preferably oxalates are coprecipitated from a nitrate solution of M1 and M11 with oxalic acid, converted to a mixed oxide by heating in air at 600 DEG to 1300 DEG C. for 0.2 to 4 hours, the mixed oxide then heated in H2Ch at 900 DEG to 1300 DEG C. for 0.2 to 2 hrs. The phosphor may also be prepared by firing a mixture of oxalates in H2S, or a mixture of sulphates in H2, or a mixture of oxides in C2S, or a mixture of sulphides and oxides, or oxalates, or sulphates in N2 or H2, or a mixture of sulphates in H2S or C2S, or a substantially stoichiometric mixture of oxides and sulphides in a neutral or reducing atmosphere, in all cases at 900 DEG to 1300 DEG C. for 0.2 to 2.0 hours. Red emitting phosphors such as La1.90, Eu0.10, O2S and Lu1.98, Sm0.02, O2S and green phosphors such as La1.97Tb0.03O2S may be used in cathode-ray tubes. Other phosphors mentioned are La1.94Eu0.06O2S, La1.94Sm0.06O2, La1.96Pro0.04 O2S, La1.98Tb0.02O2S, La1.90Nd0.10O2S, Lu1.94Tb0.06O2S with principal peaks at 6260<\>rA 6075<\>rA, 5100<\>rA, 5460<\>rA, 9000<\>rA, and 4590<\>rA respectively, minor peaks also being disclosed, and all being both photo- and cathodoluminescent.
GB1278666A 1965-03-24 1966-03-23 Phosphor and method of preparation thereof Expired GB1121055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44251865A 1965-03-24 1965-03-24

Publications (1)

Publication Number Publication Date
GB1121055A true GB1121055A (en) 1968-07-24

Family

ID=23757107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1278666A Expired GB1121055A (en) 1965-03-24 1966-03-23 Phosphor and method of preparation thereof

Country Status (10)

Country Link
AT (1) AT271661B (en)
BE (1) BE678413A (en)
CA (1) CA952706A (en)
DE (1) DE1279872B (en)
DK (1) DK117848B (en)
ES (1) ES324472A1 (en)
FR (1) FR1473532A (en)
GB (1) GB1121055A (en)
NL (1) NL6603804A (en)
SE (1) SE301528B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030853A1 (en) * 1979-12-12 1981-06-24 Hitachi, Ltd. Phosphor and method of manufacturing the phosphor
EP0523828A2 (en) * 1991-06-19 1993-01-20 Polaroid Corporation Optically pumped up coverting light source
EP1666566A1 (en) * 2003-09-24 2006-06-07 Toshiba Carrier Corporation Ceramic scintillator, and radiation detector and radiographic examination apparatus using same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502590A (en) * 1967-03-01 1970-03-24 Rca Corp Process for preparing phosphor
EP1493798A1 (en) * 2003-06-30 2005-01-05 Agfa-Gevaert Rare earth activated lutetium oxysulfide phosphor for direct x-ray detection.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1343851A (en) * 1962-11-05 1963-11-22 Du Pont New luminescent compositions

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030853A1 (en) * 1979-12-12 1981-06-24 Hitachi, Ltd. Phosphor and method of manufacturing the phosphor
EP0523828A2 (en) * 1991-06-19 1993-01-20 Polaroid Corporation Optically pumped up coverting light source
EP0523828A3 (en) * 1991-06-19 1994-01-19 Polaroid Corp
EP0801123A2 (en) * 1991-06-19 1997-10-15 Polaroid Corporation Optically pumped up converting light source
EP0801123A3 (en) * 1991-06-19 1998-07-01 Polaroid Corporation Optically pumped up converting light source
EP1666566A1 (en) * 2003-09-24 2006-06-07 Toshiba Carrier Corporation Ceramic scintillator, and radiation detector and radiographic examination apparatus using same
EP1666566A4 (en) * 2003-09-24 2008-05-07 Toshiba Kk Ceramic scintillator, and radiation detector and radiographic examination apparatus using same

Also Published As

Publication number Publication date
NL6603804A (en) 1966-09-26
SE301528B (en) 1968-06-10
BE678413A (en) 1966-09-01
AT271661B (en) 1969-06-10
ES324472A1 (en) 1967-03-16
DK117848B (en) 1970-06-08
DE1279872B (en) 1968-10-10
FR1473532A (en) 1967-03-17
CA952706A (en) 1974-08-13

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